What has lots of eyes, but can’t see?

Find the number of squares in the below-given picture.

A famous swimmer can swim downstream in a lake in exactly 40 minutes with the lake current.
He can swim upstream in that lake in exactly 60 minutes against the lake current.
The length of the lake is 2 km.

How long he can cover the distance of one side at a still lake with no current?

John is pretty weird. He likes toffees but hates chocolates. He loves books but never reads. He likes to build his troops in an online game but does not proceed with the war. He likes to go swimming but is afraid of water.

Seeking this behaviour, can you tell whether he likes balloons and parties?

If you drop a 15 kg iron bar and a 5 kg bag of cotton from a height of 50 meters which will reach the ground first?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

A person was found dead on a big green land with no trees or buildings around. When the police arrived, they found a piece of rock lying next to him and the man was wearing clothes comprising of red, blue and yellow colours.

Can you tell who the person is and what was the cause of death?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

I make two people out of one. What am I?